On 21/04/2015 6:00 PM, "Krishna Kumar (Engineering)" <
krishna...@flipkart.com> wrote:
>
> Hi all,
>
> While running the command: :" ab -n 100000 -c 1000 192.168.122.110:80/256
",
> the haproxy stats page shows the 4 different backend servers changing
status
> between "Active up, going down", "Active or backup down", "Down", "Backup
down, going UP", sometimes all 4 backends are in DOWN state. The result is
very
> poor performance reported by 'ab' as compared to running directly against
a
> single backend.
>
> What could be the reason for this continuous state change?
>
> root@HAPROXY:~# haproxy -vv
> HA-Proxy version 1.5.8 2014/10/31
> Copyright 2000-2014 Willy Tarreau <w...@1wt.eu>
>
> Build options :
> TARGET = linux2628
> CPU = generic
> CC = gcc
> CFLAGS = -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat
-Werror=format-security -D_FORTIFY_SOURCE=2
> OPTIONS = USE_ZLIB=1 USE_OPENSSL=1 USE_PCRE=1
>
> Default settings :
> maxconn = 2000, bufsize = 16384, maxrewrite = 8192, maxpollevents = 200
>
> Encrypted password support via crypt(3): yes
> Built with zlib version : 1.2.7
> Compression algorithms supported : identity, deflate, gzip
> Built with OpenSSL version : OpenSSL 1.0.1e 11 Feb 2013
> Running on OpenSSL version : OpenSSL 1.0.1k 8 Jan 2015
> OpenSSL library supports TLS extensions : yes
> OpenSSL library supports SNI : yes
> OpenSSL library supports prefer-server-ciphers : yes
> Built with PCRE version : 8.30 2012-02-04
> PCRE library supports JIT : no (USE_PCRE_JIT not set)
> Built with transparent proxy support using: IP_TRANSPARENT
IPV6_TRANSPARENT IP_FREEBIND
>
> Available polling systems :
> epoll : pref=300, test result OK
> poll : pref=200, test result OK
> select : pref=150, test result OK
> Total: 3 (3 usable), will use epoll.
>
>
> Thanks,
> - Krishna Kumar
>
http://cbonte.github.io/haproxy-dconv/configuration-1.5.html#inter
